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All Journal JTTM: Jurnal Terapan Teknik Mesin
Indra Widarmadi
Institut Teknologi Budi Utomo, Jakarta, Indonesia
Aerospace Engineering Control & Systems Engineering Engineering Mechanical Engineering

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Analysis of the auto lube system electric grease pump against the unscheduled breakdown of the dump truck unit brand k type HD 1500-7 Indra Widarmadi; Sahidul Anam; Basuki Wisnu; Husodo Sumardi
JTTM : Jurnal Terapan Teknik Mesin Vol 4 No 2 (2023): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Sekolah Tinggi Teknologi Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v4i2.620

Abstract

A lubrication failure resulted in damage to the HD 1500-7 dump truck unit auto lube system, making the system ineffective and leading to lubrication failure on the frame components. Because the damaged HD 1500-7 dump truck unit is inoperable when it occurs, this damage may have an impact on its production. The goal of this study was to ascertain whether maintenance performance on the Dump Truck Brand K type HD 1500-7 unit was impacted by lubrication failure in the auto lube system. Additionally, learn how to assess the Auto lube system on the Dump Truck Brand K type HD 1500-7 and how much electricity the Grease Pump Auto lube system Dump Truck unit Brand K type HD 1500-7 uses. Using a quantitative approach, discover what is causing the HD 1500-7 dump truck unit and the auto lube system to malfunction. The analysis of the Dump Truck HD 1500-7 unit's maintenance performed from February to April 2022 revealed that the average MTBF value is 352.9 hours, the average MTTR value is 5.388 hours, and the average PA value is 96.38%. The oil-powered reciprocating pump produces 537.81 Watts of power. At a grease pressure of 2500 psi, the displacement (grease) pump requires 163.29 Watts from the reciprocating (oil) pump to operate, compared to 58.67 Watts at a grease pressure of 1500 psi. The standard working pressure for the displacement (grease) pump is 2500 psi, whereas the standard working pressure for the reciprocating (oil) pump is 400 psi. The working pressure on the oil and grease does not achieve the standard pressure, an error arises and results in lubrication failure in the frame components, and this might have an impact on the HD 1500-7 unit's maintenance performance
Performance analysis of refrigeration system with 1 pk compressor based on evaporator temperature variation M. Sugiri; Indra Widarmadi; Parman Sinaga
JTTM : Jurnal Terapan Teknik Mesin Vol 6 No 1 (2025): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v6i1.1566

Abstract

Refrigeration machines or also called cooling machines are machines that can cause the refrigeration effect, while refrigerants are substances used as working fluids in the heat absorption process. Refrigeration is a process of absorbing heat from a substance or product so that its temperature is below the ambient temperature. The purpose of the study was to analyze the performance of the refrigeration machine and the research method used was the experimental method by testing a 1 PK cooling machine using R134a refrigerant with temperature variations in the evaporator room. The results of this study showed that the performance of the refrigeration system to reach a temperature of -15ยบ C took 7 hours 45 minutes with a load of 10 liters of water. The lowest compressor power value was 0.5307 kW and the highest was 0.6566 kW. The lowest compressor work value was 32 kJ/kg and the highest was 41 kJ/kg. The lowest heat value released by the condenser was 1.95 kW and the highest was 2.698 kW. The lowest calorific value absorbed by the evaporator is 1.43 kW and the highest is 2.09 kW, the lowest refrigerant mass flow rate value is 0.013 kg/s and the highest is 0.019 kg/s. The lowest actual COP value is 2.69 and the highest is 3.43.
Co-Authors Basuki Wisnu Husodo Sumardi Moch Sugiri Parman Sinaga Sahidul Anam